It usually starts with making a deliberate change known as a ‘keystone habit’. A keystone habit is something that has a ripple effect on everything else. Imagine setting an alarm for 5 a.m. to go out for an early morning run. If you make it to the run on the first day, you feel energised all day, are less tempted to eat unhealthy food, feel tired at night so you sleep early, and wake up again the next morning, fresh and charged up for another run. You repeat this cycle for a few days and weeks, and not only does waking up early become a new habit, but it also ends up changing many other habits
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